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Forum: Trigonometry

Trigonometric Functions, Trigonometric Identities, etc.

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  2. Trig identity

    Started by NotaMathPerson, July 31st, 2016 12:12
    continue, cos2a, cos2a=sqrtm, cosa^2-sina^2, identity
    • Replies: 7
    • Views: 609
    July 31st, 2016, 20:03 Go to last post
  3. number of solution

    Started by jacks, July 28th, 2016 06:37
    $xin, left[-pi, number, piright]$, solution
    • Replies: 3
    • Views: 275
    July 28th, 2016, 10:37 Go to last post
  4. [SOLVED] Find the angle BHL using trigonometry

    Started by mathlearn, July 28th, 2016 03:22
    3 Pages
    1 2 3
    • Replies: 20
    • Views: 1,198
    July 28th, 2016, 08:07 Go to last post
  5. Trig Identity

    Started by tmt, July 13th, 2016 03:12
    $n$, $sinleftfrac1n^2right, case, degrees, quadrant
    • Replies: 2
    • Views: 372
    July 22nd, 2016, 18:33 Go to last post
    • Replies: 2
    • Views: 504
    July 20th, 2016, 10:23 Go to last post
  6. Solving trigonometry equations

    Started by fordy2707, July 17th, 2016 09:08
    answer, clue, equation, find, reached
    • Replies: 4
    • Views: 412
    July 18th, 2016, 00:11 Go to last post
  7. finding functions

    Started by fordy2707, July 3rd, 2016 13:24
    angle, functions, phase, radians, seconds
    • Replies: 3
    • Views: 507
    July 10th, 2016, 11:34 Go to last post
  8. Trig Expression Domain

    Started by tmt, June 26th, 2016 16:59
    cos, cos^2theta$, fracpi2, sqrt, theta$
    • Replies: 1
    • Views: 333
    June 26th, 2016, 17:53 Go to last post
  9. solve the equations

    Started by matyw, June 6th, 2016 21:13
    180°, equations, rquation, solve, tan°x
    • Replies: 4
    • Views: 567
    June 11th, 2016, 07:16 Go to last post
  10. question related to inverse sine functions

    Started by gsn57iaf, May 21st, 2016 02:48
    π/3, 1/2, case, correct, sin-1
    • Replies: 2
    • Views: 363
    May 21st, 2016, 03:25 Go to last post
  11. [SOLVED] Beginner's Verifying Trig Identity

    Started by courtbits, October 13th, 2015 12:05
    asin, cot, identity, trig, verifying
    • Replies: 7
    • Views: 771
    May 15th, 2016, 22:41 Go to last post
  12. [SOLVED] arccos(x) =arctan(x)

    Started by karush, April 7th, 2016 18:34
    $x$, =arctanx, explain, intersects, negative
    • Replies: 8
    • Views: 936
    May 14th, 2016, 01:57 Go to last post
  13. Helping my daughter study for a Trig test....

    Started by ok782, April 17th, 2016 14:25
    daughter, find, solve, study, trig
    • Replies: 3
    • Views: 504
    May 14th, 2016, 00:58 Go to last post
  14. [SOLVED] equal graphs polar and rectangular

    Started by karush, April 4th, 2016 18:20
    • Replies: 2
    • Views: 380
    April 5th, 2016, 17:12 Go to last post
  15. [SOLVED] Define a discontinuous sine function?

    Started by samir, April 5th, 2016 04:35
    define, discontinuous, function, multiples, sine
    • Replies: 2
    • Views: 385
    April 5th, 2016, 06:08 Go to last post
  16. trigonometry mountain assessment problem

    Started by jenherting, March 29th, 2016 22:37
    ground, meters, number, point, track
    • Replies: 3
    • Views: 443
    March 30th, 2016, 16:56 Go to last post
  17. [ASK] Tan 36°

    Started by Monoxdifly, March 22nd, 2016 21:36
    • Replies: 7
    • Views: 772
    March 25th, 2016, 21:19 Go to last post
  18. [SOLVED] y=sinx in polar form

    Started by karush, March 24th, 2016 23:51
    equations, form, plots, polar, simple
    • Replies: 4
    • Views: 515
    March 25th, 2016, 18:41 Go to last post
  19. Y=x^3 in polar form

    Started by karush, March 23rd, 2016 23:58
    • Replies: 2
    • Views: 486
    March 24th, 2016, 02:29 Go to last post
  20. trig identity

    Started by paix1988, March 6th, 2016 08:49
    assistance, cos2x, identity, tanx, trig
    • Replies: 1
    • Views: 477
    March 6th, 2016, 09:20 Go to last post
  21. [SOLVED] Area and angles of iso triangle given find sides

    Started by karush, March 5th, 2016 15:31
    • Replies: 3
    • Views: 514
    March 5th, 2016, 16:22 Go to last post
  22. Right triangle

    Started by evinda, February 25th, 2016 13:12
    2 Pages
    1 2
    • Replies: 18
    • Views: 1,274
    February 25th, 2016, 18:12 Go to last post
  23. Find time

    Started by evinda, February 17th, 2016 13:29
    airplane, airport, find, position, time
    • Replies: 3
    • Views: 496
    February 17th, 2016, 16:44 Go to last post
  24. [SOLVED] Another inconvenient identity

    Started by karush, February 12th, 2016 16:33
    bad, direction, formulas, product, sum
    • Replies: 2
    • Views: 609
    February 13th, 2016, 17:04 Go to last post
  25. [SOLVED] Trig identity theory

    Started by karush, February 12th, 2016 00:08
    $p$, $q$, are$$90^o, identity, theory
    • Replies: 8
    • Views: 876
    February 12th, 2016, 16:24 Go to last post
  26. [SOLVED] Trigonometric sum with a product as the argument

    Started by greg1313, February 7th, 2016 01:27
    argument, product, prove, sum, trigonometric
    • Replies: 2
    • Views: 503
    February 7th, 2016, 08:15 Go to last post
  27. Solve for frequency & angle in dispersion equation

    Started by NiToNi, January 19th, 2016 10:58
    arcsin, equation, sintheta, sin[/c, solve
    • Replies: 2
    • Views: 559
    January 21st, 2016, 07:24 Go to last post
  28. Inverse trig

    Started by Guest, January 12th, 2016 03:20
    $arcsinsinfrac−3pi2$, $arcsinsinfrac−3pi2.$, $arcsinsinfrac−3pi2?$, inverse, trig
    • Replies: 1
    • Views: 378
    January 12th, 2016, 05:05 Go to last post
  29. Inverse trigonometric functions

    Started by Guest, January 10th, 2016 05:34
    $displaystyle, arccoscosfracfracpi3, functions, inverse, trigonometric
    • Replies: 4
    • Views: 465
    January 10th, 2016, 08:36 Go to last post
  30. Trig simplication

    Started by Guest, January 2nd, 2016 01:14
    arcsinsinleft11pi/5right, simplication, simplify, trig
    • Replies: 4
    • Views: 498
    January 2nd, 2016, 02:00 Go to last post

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